000
AGXX40 KNHC 081858
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
200 PM EST MON JAN 8 2007

MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

BROAD UPPER LEVEL ANTICYCLONIC CIRCULATION OVER SW N ATLC BEING 
FORCED E BY STRONG DEEP LAYER TROUGH RUSHING ACROSS E CONUS.  
WIND FLOW HAS FLATTENED RIDGE CREST OVER GULF OF MEXICO WITH  
110 KT JET CORE FLOWING OVER N FLORIDA AND PANHANDLE.  RIDGE 
MAINTAINS DRY AIRMASS OVER ENTIRE SW N ATLC...CARIBBEAN AND 
PORTIONS OF GULF OF MEXICO E OF APPROACHING TROUGH.

UPPER LEVEL CUT OFF CYCLONIC CIRCULATION 23N56W ENHANCES EROSION 
OF RIDGE BUT HAS LITTLE INFLUENCE IN CONDITIONS ELSEWHERE AS 
SURFACE TROUGH WEAKENS E OF AREA.

AT THE SURFACE...
GULF OF MEXICO
COLD FRONT OVER N FLORIDA AND ERN GULF OF MEXICO HAS WEAKEN 
CONSIDERABLY AS ITS SUPPORTING UPPER LEVEL SHORT WAVE RIDING 
DEEP LAYER TROUGH SHIFT MORE NELY.  WIND AND SEAS BEHIND COLD 
FRONT VERY STRONG TONIGHT DIMINISHING WED.  HIGH PRES RIDGE 
REBUILDS OVER SW N ATLC AFTER COLD FRONT PASSAGE TIGHTENING 
GRADIENT OVER ERN GULF FRI WHILE SLY RETURN FLOW ESTABLISHES 
OVER WRN GULF IN ADVANCE OF NEXT COLD FRONT DUE LATE SAT.

CARIBBEAN SEA
STRONG TRADES ALONG COLOMBIAN COAST WEAKEN SIGNIFICANTLY AS ATLC 
RIDGE SHIFTS E AND WEAKENS...EXCEPT NW PORTION WHERE COLD FRONT 
NOW OVER ERN GULF OF MEXICO ENTERS WITH STRONG NELY WIND.  
SIMILAR TO GULF...CARIBBEAN WINDS AND SEAS INCREASE AS ATLC 
RIDGE REBUILDS LATE THU THROUGH SAT.    

SW N ATLC
BRISK SW WIND AHEAD OF COLD FRONT N OF 27N SHIFT NW AND INCREASE 
BEHIND FRONT TUE AND WED.  HIGH PRES RIDGE REBUILDS OVER BASIN
THU WITH TIGHT GRADIENT BRINGING POLAR NORTHERLIES AND LARGE 
SWELLS SWEEPING S REACHING ENTIRE AREA BY SAT.  WINDS SHIFT NE 
AS RIDGE DRIFT E.   

WARNINGS...

ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER WALLY BARNES